Sun radiates energy at the rate of `3.6xx10^(26)J//s`. The rate of decrease in mass of sun is `(Kgs^(1))`.

The sun radiates energy at the rate of 4xx10^(26) joule sec^(-1) . If the energy of fusion process 4 ._(1)^(1)H rarr ._(2)^(4)He + 2 ._(1)^(0)e is 27MeV , calculated amount of hydrogen atoms that would be consumed per day for the given process.

If each square metre, of sun's surface radiates energy at the rate of 6.3xx10^(7) jm^(-2) s^(-1) and the Stefan's constant is 5.669xx10^(-8) Wm^(-2) K^(-4) calculate the temperature of the sun's surface, assuming Stefan's law applies to the sun's radiation.

The sun radiates energy at the rate of 6.4xx10^(7)Wm^(-2) . Calculate its temperature assuming it to be a black body.

If each square cm of the sun's surface radiates energy at the rate of 6.42xx10^(3) Js^(-1) cm^(-2) , calculate the temperature of the sun's surface in degree celsius, assuming Stefan's law applies to the radiation. (Stefan's constant = 5.67xx10^(-8)Wm^(-2)K^(-4) )

The Sun has mass 2.0xx10^(30) kg and radiates energy at the rate 3.9xx10^(26)W (A) At what rate is it mass changing? (b) What fraction of its original mass has it lost in this way since it began to burn hydrogen, about 4.5xx10^(9) y ago?

The sun radiates electromagnetic energy at the rate of 3.9xx10^(26)W . Its radius is 6.96xx10^(8)m . The intensity of sun light at the solar surface will be (in W//m^(2) )

The sun radiates electromagnetic energy at the rate of 3.9xx10^(26)W . Its radius is 6.96xx10^(8)m . The intensity of sun light at the solar surface will be (in W//m^(2) )